Stephen J. Schueler, M.D.

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Cancer Testicles Anatomy

To better understand testicular cancer, it helps to understand the anatomy of the scrotum and testicles.

The scrotum is a sac of skin that contains two testicles, which produce sperm. Next to each testicle lie the epididymis, vas deferens, and spermatic cord. The scrotum also contains blood vessels and fat.

Each testicle receives its blood supply through the spermatic cord. A blocked spermatic cord cuts off the blood supply to the testicle.

The epididymis is a thin, folded, tube that is about 15 feet long. The epididymis receives sperm from the testicle in the scrotum. The sperm mature as they pass through the epididymis. The epididymis ends in the vas deferens, through which sperm pass to the prostate gland.

Male genital anatomy:

  • Testicle
  • Inguinal canal and scrotum
  • Prostate, testes, and penis
  • Prostate and bladder
  • Locations where lymph node swelling can be felt

Last Updated: Jan 5, 2011 References
Authors: Stephen J. Schueler, MD; John H. Beckett, MD; D. Scott Gettings, MD
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PubMed Cancer Testicles References
  1. Balk C, Witjes JA. Advances in the management of testicular cancer. Expert Rev Anticancer Ther. 2004 Aug;4(4):669-77. [15270670]
  2. Garner MJ, Turner MC, Ghadirian P, Krewski D. Epidemiology of testicular cancer: an overview. Int J Cancer. 2005 Sep 1;116(3):331-9. [15818625]
  3. Masters JR, Koberle B. Curing metastatic cancer: lessons from testicular germ-cell tumours. Nat Rev Cancer. 2003 Jul;3(7):517-25. [12835671]
  4. Shabbir M, Morgan RJ. Testicular cancer. J R Soc Health. 2004 Sep;124(5):217-8. [15493780]
  5. Wirehn AB, Tornberg S, Carstensen J. Serum cholesterol and testicular cancer incidence in 45,000 men followed for 25 years. Br J Cancer. 2005 May 9;92(9):1785-6. [15827555]
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